25539222 has 8 divisors (see below), whose sum is σ = 51078456. Its totient is φ = 8513072.

The previous prime is 25539209. The next prime is 25539233. The reversal of 25539222 is 22293552.

It is a sphenic number, since it is the product of 3 distinct primes.

25539222 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 25539222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2128263 + ... + 2128274.

It is an arithmetic number, because the mean of its divisors is an integer number (6384807).

Almost surely, 2^25539222 is an apocalyptic number.

25539222 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25539222 is a wasteful number, since it uses less digits than its factorization.

25539222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4256542.

The product of its digits is 10800, while the sum is 30.

The square root of 25539222 is about 5053.6345336797. The cubic root of 25539222 is about 294.4890974986.

The spelling of 25539222 in words is "twenty-five million, five hundred thirty-nine thousand, two hundred twenty-two".